Client
Michigan Municipal Landfill
Year

2020

Recovered approximately 75% of the leachate as clean water
  • Two-Step Reverse Osmosis (TSRO)

Case Study: TSRO, Landfill, Municipal

A municipal landfill leachate based in Michigan produces 50,000 GPD of leachate from their landfill. The leachate is currently processed by conventional wastewater treatment, which doesn’t meet the standard to discharge in the water bodies. They wanted to treat their process water to make clean water to comply with the regulatory permit.

Company Issue / Challenge

The company is currently providing huge surcharge for releasing the leachate stream directly in a creek.

The cost for land application is high and runoff has few nutrients, so paying to truck this material to farm fields is not efficient.

Managing the storage and hauling of leachate is a constant challenge and requires coordination of various trucks throughout the year.

Concentrating the nutrients in the leachate for storage and later land application with manure would be most efficient.

What We Delivered

1

Site Assessment

Worked with the Municipal Landfill to understand its unique challenges and brainstorm how best we could assist.
2

Pilot Testing

We collected samples of raw leachate and used our TSRO system to create clean water that can be reused or discharged directly to waterbodies.

Impact & Benefits

Our filtration system is designed to recover more than 75% of the leachate as clean water for direct discharge.

1

Clean Water Reclamation

The reclaimed water can be directly discharged into bodies of water.
PARAMETERUnitLandfill LeachateTSRO PermeateTSRO ConcentratePercent Removal by TSRO
Total Solidsmg/L 17,3002100 52,90088%
Ammoniacal Nitrogenmg/L 1,10086.8 1,32092%
Organic Nitrogenmg/L 1106.9 23094%
Total Kjeldahl nitrogen (TKN)mg/L 1,21093.7 1,55092%
Phosphorusmg/L 11n.d. 12100%
Potassiummg/L 55719 82897%
Sulfurmg/L 47n.d. 294100%
Calciummg/L 148n.d. 391100%
Magnesiummg/L 150n.d. 359100%
Sodiummg/L 5,660793 16,10086%
Ironmg/L41.9n.d.50.9100%
Manganesemg/L0.405n.d.0.676100%
Zincmg/L1.19n.d.1.38100%
Coppermg/L0.02n.d.0.29100%
ConductivitymS/cm31.85.5771.6na
pHS.U.7.576.618.2na

These data reveal that majority of total solids (88%); total nitrogen (92%) and metals were removed by the TSRO. Phosphorus concentration was below detection limit indicating that the TSRO produced very clean water.  Note that the high concentration of sodium in the TSRO concentrate is an artifact of batch concentration that leads to elevated total solids concentration. It would not be expected in the commercial, continuous system.

Liquid Pictures

Scroll the gallery to see pictures of the materials from our filtration equipment.

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